Water treatment device and humidification device

Patent metadata

Field	Value
Publication number	US-9950935-B2
Application number	US-201515512291-A
Country	US
Kind code	B2
Filing date	May 19, 2015
Priority date	Sep 30, 2014
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A water treatment device includes: an insulating divider which divides a space inside a water tank into two treatment vessels adjacent to each other in a horizontal direction, and includes a current carrier which is able to energize water in the two treatment vessels; a treatment unit including a pair of electrodes, a power supply, and a power supply controller; a water supplier which supplies water to each of the treatment vessels; and a draining member which drains water from each of the treatment vessels. The treatment unit includes a detector which detects a level of water in each of the treatment vessels based on an index corresponding to a current value between the pair of electrodes.

First claim

The invention claimed is:

1. A water treatment device, comprising:
a water tank which stores water;
an insulating divider which divides a space inside the water tank into two treatment vessels adjacent to each other in a horizontal direction, and includes a current carrier which is able to energize water in the two treatment vessels;
a treatment unit including a pair of electrodes arranged one each in each of the treatment vessels, a power supply which applies a voltage to the pair of electrodes, and a power supply controller which switches between an ON operation of keeping the power supply ON and an OFF operation of turning the power supply OFF;
a water supplier which supplies water to each of the treatment vessels; and
a draining member which drains water from each of the treatment vessels, wherein
the treatment unit further includes a detector which determines whether a level of water in each of the treatment vessels lies within a normal range or not based on an index corresponding to a current value between the pair of electrodes, and
the water supplier includes a water supply pipe, and a switch which switches between a water supply operation of supplying water through the water supply pipe and a stop operation of stopping the water supply operation, the water supplier being configured to perform the stop operation if the detector detects that the current value between the pair of electrodes is higher than an upper limit value of a predetermined normal range during the water supply operation.

2. The water treatment device of claim 1 , wherein
during the ON operation, the power supply controller is configured to continue the ON operation if the detector detects that the current value between the pair of electrodes lies within a predetermined normal range, and execute the OFF operation if the detector detects that the current value between the pair of electrodes is out of the normal range.

3. The water treatment device of 1 , wherein
the draining member is configured to gradually drain water from each of the treatment vessels at all times.

4. The water treatment device of claim 1 , wherein
a tapered portion which is tapered upward is formed at an upper end of the divider.

5. The water treatment device of claim 1 , further comprising:
a drain pipe provided only for one treatment vessel of the two treatment vessels, and includes an inlet located in the treatment vessel between a lower end of the electrode and an upper end of the divider and an outlet located under the water tank; and
a sump which collects water flowing from the outlet of the drain pipe.

6. A water treatment device, comprising:
a water tank which stores water;
an insulating divider which divides a space inside the water tank into two treatment vessels adjacent to each other in a horizontal direction, and includes a current carrier which is able to energize water in the two treatment vessels;
a treatment unit including a pair of electrodes arranged one each in each of the treatment vessels, a power supply which applies a voltage to the pair of electrodes, and a power supply controller which switches between an ON operation of keeping the power supply ON and an OFF operation of turning the power supply OFF;
a water supplier which supplies water to each of the treatment vessels; and
a draining member which drains water from each of the treatment vessels, wherein
the treatment unit further includes a detector which determines whether a level of water in each of the treatment vessels lies within a normal range or not based on an index corresponding to a current value between the pair of electrodes,
during the ON operation, the power supply controller is configured to continue the ON operation if the detector detects that the current value between the pair of electrodes lies within a predetermined normal range, and execute the OFF operation if the detector detects that the current value between the pair of electrodes is out of the normal range,
the current carrier is comprised of a small hole which allows the two treatment vessels to communicate with each other,
the treatment unit is comprised of a discharge unit which causes discharge inside the small hole, and
a lower end of each of the pair of electrodes is at a level higher than an upper end of the small hole.

7. A humidifier, comprising:
a passage forming member which forms an air passage; and
the water treatment device of claim 1 , wherein
the draining member of the water treatment device is comprised of a water absorbing member including an immersed portion immersed in water in each of the treatment vessels, and a desorbing portion arranged in the air passage.

Assignees

• Daikin Ind Ltd

Inventors

• Saitou Tomoki
• Nishimura Masaya
• Ohdou Tsunahiro
• Yamaguchi Sachiko

Classifications

• C02F2201/46145

  Fluid flow · CPC title

• C02F1/008

  Control or steering systems not provided for elsewhere in subclass C02F · CPC title

• F24F6/00

  Air-humidification {, e.g. cooling by humidification} · CPC title

• C02F1/4618

  for producing "ionised" acidic or basic water · CPC title

• C02F2307/12

  as part of household appliances such as dishwashers, laundry washing machines or vacuum cleaners · CPC title